First measurement of the  Z → μ+ μ−   angular coefficients in the forward region of pp  collisions at √s = 13 TeV

LHCb Collaboration; Paul Swallow; Ryan Calladine; Simone Bifani; Niladribihari Sahoo; Naomi Cooke

doi:10.1103/PhysRevLett.129.091801

First measurement of the Z → μ⁺ μ⁻ angular coefficients in the forward region of pp collisions at √s = 13 TeV

LHCb Collaboration, Paul Swallow, Ryan Calladine, Simone Bifani, Niladribihari Sahoo, Naomi Cooke

Physics and Astronomy

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Abstract

The first study of the angular distribution of μ⁺μ⁻ pairs produced in the forward rapidity region via the Drell-Yan reaction pp→γ^∗/Z+X→ℓ⁺ℓ⁻+X is presented, using data collected with the LHCb detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.1 fb⁻¹. The coefficients of the five leading terms in the angular distribution are determined as a function of the dimuon transverse momentum and rapidity. The results are compared to various theoretical predictions of the Z-boson production mechanism and can also be used to probe transverse-momentum-dependent parton distributions within the proton.

Original language	English
Article number	091801
Number of pages	11
Journal	Physical Review Letters
Volume	129
Issue number	9
Early online date	24 Aug 2022
DOIs	https://doi.org/10.1103/PhysRevLett.129.091801
Publication status	Published - 26 Aug 2022

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title = "First measurement of the Z → μ+ μ− angular coefficients in the forward region of pp collisions at √s = 13 TeV",

abstract = "The first study of the angular distribution of μ+μ− pairs produced in the forward rapidity region via the Drell-Yan reaction pp→γ∗/Z+X→ℓ+ℓ−+X is presented, using data collected with the LHCb detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.1 fb−1. The coefficients of the five leading terms in the angular distribution are determined as a function of the dimuon transverse momentum and rapidity. The results are compared to various theoretical predictions of the Z-boson production mechanism and can also be used to probe transverse-momentum-dependent parton distributions within the proton.",

author = "{LHCb Collaboration} and Nigel Watson and Paul Swallow and Ryan Calladine and Simone Bifani and Niladribihari Sahoo and Naomi Cooke",

year = "2022",

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T1 - First measurement of the Z → μ+ μ− angular coefficients in the forward region of pp collisions at √s = 13 TeV

AU - LHCb Collaboration

AU - Watson, Nigel

AU - Swallow, Paul

AU - Calladine, Ryan

AU - Bifani, Simone

AU - Sahoo, Niladribihari

AU - Cooke, Naomi

PY - 2022/8/26

Y1 - 2022/8/26

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AB - The first study of the angular distribution of μ+μ− pairs produced in the forward rapidity region via the Drell-Yan reaction pp→γ∗/Z+X→ℓ+ℓ−+X is presented, using data collected with the LHCb detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.1 fb−1. The coefficients of the five leading terms in the angular distribution are determined as a function of the dimuon transverse momentum and rapidity. The results are compared to various theoretical predictions of the Z-boson production mechanism and can also be used to probe transverse-momentum-dependent parton distributions within the proton.

UR - https://arxiv.org/abs/2203.01602

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DO - 10.1103/PhysRevLett.129.091801

M3 - Article

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VL - 129

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

M1 - 091801

ER -

First measurement of the Z → μ+ μ− angular coefficients in the forward region of pp collisions at √s = 13 TeV

Abstract

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First measurement of the Z → μ⁺ μ⁻ angular coefficients in the forward region of pp collisions at √s = 13 TeV